Coding apps may be of interest - HopscotchDaisy the DInosaurKodableScratch Jr Reflecting on our learning… What questions do you still have about the problem we did today? If you don’t have a question write a similar problem and solve it instead.
What were the main mathematical concepts that you learned today or that we discussed in class today?
= Strategies we are learning to use ...
=
Miss McLennan walks 38 kilometres each day for five days. How many kilometres has she travelled by the end of the five days? Rounding and compensating:
38 x 5
38 is rounded to 40 so the equation becomes 40 x 5 then 10 which is (2 x 5) is subtracted
Proportional adjustment:
38 x 5
Solve instead 19 x 10 using doubling and halving (by halving 38 and doubling 5)
Place value partitioning:
38 x 5
Solve 30 x 5, add 8 x 5
Problem 2:
There were 136 rowers entered in the eights rowing champs at the Maadi Cup. How many teams are entered?
Work out the answer in their heads. Share their solutions and how they solved it with their learning partner. The following are possible responses:
Place value partitioning (chunking):
136 ÷ 8
I know that 36 ÷ 8 = 4 with a remainder of 4
I now have 104 ÷ 8, I know that 10 x 8 = 80 and that leaves me 24 which is 3 groups of 8 so the answer is 13 and the first four which is 17.
Factorisation (proportional adjustment):
Dividing by 8 is like dividing by 2 then 2 then 2 so half 136 is 68 and half 68 is 34 and divide by 2 again leaves me 17 so the answer is 17.
Rounding and compensating:
160 would be the same as 8 times 20. 136 is 24 less than that, or three teams less than 20… it’s 17.
Charlize (8)
Tessa (8)
Oliver (7)
James (7)
https://dontmemorise.com/course/view.php?id=24
Check this site out ..... is it helpful?
http://www2.nzmaths.co.nz/number/Operating%20Units/MultDivStrategies.aspx
SET FOUR
Time allowed - 30 minutes
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What is the value of ♥ ?
What is the number on the last numbered page?
Recommended Maths sites by our ICT advisor Nicki
Maths online activities split into stages and topicsA schools site with resources for students and familyLearning PathwaysAuthentic Questions
Coding apps may be of interest - HopscotchDaisy the DInosaurKodableScratch Jr
Reflecting on our learning…
What questions do you still have about the problem we did today? If you don’t have a question write a similar problem and solve it instead.
What were the main mathematical concepts that you learned today or that we discussed in class today?
Strategies we are learning to use ...
=
Miss McLennan walks 38 kilometres each day for five days. How many kilometres has she travelled by the end of the five days?
Rounding and compensating:
38 x 5
38 is rounded to 40 so the equation becomes 40 x 5 then 10 which is (2 x 5) is subtracted
Proportional adjustment:
38 x 5
Solve instead 19 x 10 using doubling and halving (by halving 38 and doubling 5)
Place value partitioning:
38 x 5
Solve 30 x 5, add 8 x 5
Problem 2:
There were 136 rowers entered in the eights rowing champs at the Maadi Cup. How many teams are entered?
Work out the answer in their heads. Share their solutions and how they solved it with their learning partner. The following are possible responses:
Place value partitioning (chunking):
136 ÷ 8
I know that 36 ÷ 8 = 4 with a remainder of 4
I now have 104 ÷ 8, I know that 10 x 8 = 80 and that leaves me 24 which is 3 groups of 8 so the answer is 13 and the first four which is 17.
Factorisation (proportional adjustment):
Dividing by 8 is like dividing by 2 then 2 then 2 so half 136 is 68 and half 68 is 34 and divide by 2 again leaves me 17 so the answer is 17.
Rounding and compensating:
160 would be the same as 8 times 20. 136 is 24 less than that, or three teams less than 20… it’s 17.
https://clickv.ie/w/zgMe
Working with Carol Butel